Senior DevTools Engineer: Agentic Workflows for Faster Shipping

Meanwhile; San Francisco, Northern (CA, KY); Hybrid; USD 180,000 - 240,000; Full time

Benefits offered by this job

Fully covered health, dental, vision

Meals provided in office

Two annual company off sites

Job summary

Meanwhile in San Francisco seeks a Senior Software Engineer for Dev Tools to build agentic loops across the development stream, including code review, debugging, refactoring, and test generation. You will own tooling that engineers rely on daily.

You will instrument the CI pipeline, establish baselines, and measure cycle time, review latency, and change-failure rate, collaborating with infrastructure to keep CI fast and reliable.

Qualifications

• 10+ years of professional software engineering experience, including substantial time writing production application code
• Experience building internal developer tooling, developer platform, or build and release systems where other engineers were the users
• Hands-on experience building with LLMs and agentic tooling beyond everyday assisted coding - orchestration, tool and context design, prompt and workflow iteration
• Strong CI/CD depth: pipeline design, build and test performance, flaky test diagnosis, artifact and dependency management
• Demonstrated use of measurement to drive engineering outcomes - instrumenting a process, establishing a baseline, and showing what changed
• Strong Python, and the ability to work in a TypeScript codebase
• Ability to track a field that is moving quickly and separate what is genuinely useful from what is merely new
• Exceptional communication and influence without authority - adoption is voluntary, and tooling nobody uses is worth nothing
• Track record of improving an engineering environment you inherited, meeting a team where its tooling and workflow already are
• Comfort with ambiguity and a habit of teaching yourself the domain
• Low-ego approach and a high bar for precision
• Based in the SF Bay Area with the ability to work in-office 3 days per week

Responsibilities

• Build and operate agentic loops across the development stream - code review, investigation and debugging, refactoring, test generation and maintenance, and an engineering help desk that answers questions about our systems
• Instrument the development pipeline end to end, so we have real data on where engineering time goes rather than anecdotes
• Establish baselines and own the metrics that define success in this role: cycle time, review latency, change failure rate, time to recover, build and test reliability
• Evaluate new tools and models against our actual codebase and workflows - run the comparison, measure the result, and make the call to adopt, park, or drop
• Partner with our infrastructure team on CI: build and test times, flakiness, capacity, and the reliability of the pipeline everyone depends on
• Build the guardrails that let agents operate safely in a regulated codebase - permissions and least privilege, secret handling, provenance and review requirements for generated changes, and an audit trail of what was automated
• Improve the underlying substrate agents depend on: repository structure and conventions, test coverage and speed, internal documentation, local and ephemeral development environments
• Work within the tooling and workflows the team already has - support them, extend them, and make them better, rather than replacing them by default; when a replacement is genuinely warranted, own the case for it and the migration that follows
• Work directly with the engineering team to find where they're actually losing time, and to make sure what you build gets used
• Write production code in Python, and in TypeScript where our application codebase requires it
• Participate in business-hours on-call rotation shared across the engineering team (no nights/weekends)

Skills

Software engineering

Dev tooling

Python

TypeScript

LLMs tooling

CI/CD depth

Metrics-driven

Communication

Ambiguity tolerance

SF Bay Area

Tools

Python

React

TypeScript

PostgreSQL

GitHub Actions

AWS

Job description

Meanwhile in San Francisco seeks a Senior Software Engineer for Dev Tools to build agentic loops across the development stream, including code review, debugging, refactoring, and test generation. You will own tooling that engineers rely on daily.

You will instrument the CI pipeline, establish baselines, and measure cycle time, review latency, and change-failure rate, collaborating with infrastructure to keep CI fast and reliable.